Rewrite Atom generation from stream entries to use Ox instead of Nokogiri (#1124)

* Rewrite Atom generation from stream entries to use Ox instead of Nokogiri::Builder

StreamEntry is now limited to only statuses, which allows some optimization. Removed
extra queries on AccountsController#show. AtomSerializer instead of AtomBuilderHelper
used in AccountsController#show, StreamEntriesController#show, StreamEntryRenderer
and PubSubHubbub::DistributionWorker

PubSubHubbub::DistributionWorker moves n+1 DomainBlock query to PubSubHubbub::DeliveryWorker
instead.

All Salmon slaps that aren't based on StreamEntry still use AtomBuilderHelper and Nokogiri

* All Salmon slaps now use Ox instead of Nokogiri. No touch from status on account

2 files changed, 5 insertions, 6 deletions

diff --git a/app/workers/pubsubhubbub/delivery_worker.rb b/app/workers/pubsubhubbub/delivery_worker.rb
index 466def3a8..8412be4b7 100644
--- a/app/workers/pubsubhubbub/delivery_worker.rb
+++ b/app/workers/pubsubhubbub/delivery_worker.rb
@@ -13,6 +13,9 @@ class Pubsubhubbub::DeliveryWorker
   def perform(subscription_id, payload)
     subscription = Subscription.find(subscription_id)
     headers      = {}
+    host         = Addressable::URI.parse(subscription.callback_url).host
+
+    return if DomainBlock.blocked?(host)
 
     headers['User-Agent']      = 'Mastodon/PubSubHubbub'
     headers['Link']            = LinkHeader.new([[api_push_url, [%w(rel hub)]], [account_url(subscription.account, format: :atom), [%w(rel self)]]]).to_s
diff --git a/app/workers/pubsubhubbub/distribution_worker.rb b/app/workers/pubsubhubbub/distribution_worker.rb
index 82ff257af..68ca0f870 100644
--- a/app/workers/pubsubhubbub/distribution_worker.rb
+++ b/app/workers/pubsubhubbub/distribution_worker.rb
@@ -10,14 +10,10 @@ class Pubsubhubbub::DistributionWorker
 
     return if stream_entry.hidden?
 
-    account  = stream_entry.account
-    renderer = AccountsController.renderer.new(method: 'get', http_host: Rails.configuration.x.local_domain, https: Rails.configuration.x.use_https)
-    payload  = renderer.render(:show, assigns: { account: account, entries: [stream_entry] }, formats: [:atom])
-    # domains  = account.followers_domains
+    account = stream_entry.account
+    payload = AtomSerializer.render(AtomSerializer.new.feed(account, [stream_entry]))
 
     Subscription.where(account: account).active.select('id, callback_url').find_each do |subscription|
-      host = Addressable::URI.parse(subscription.callback_url).host
-      next if DomainBlock.blocked?(host) # || !domains.include?(host)
       Pubsubhubbub::DeliveryWorker.perform_async(subscription.id, payload)
     end
   rescue ActiveRecord::RecordNotFound